Carey, Mike -- Dead Men's Boots [e-book purchase]
Exorcist, take three. Felix and succubus sometime-partner (not that
way) are tracking down a serial killer who refuses to stay dead.
Separately (ha ha), somebody wants custody of Felix's demon-possessed
best friend. The questions of why the ghosts started coming back, and
what else might turn up in the near future, begin to arise.
Books I have acquired recently
All the books I own